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Author
XENON100 Collaboration (Aprile, E. et al)
;
Orrigo, S.E.A.
Title
Observation and applications of single-electron charge signals in the XENON100 experiment
Type
Journal Article
Year
2014
Publication
Journal of Physics G
Abbreviated Journal
J. Phys. G
Volume
41
Issue
3
Pages
035201 - 13pp
Keywords
xenon
;
single electron
;
photoionization
;
double phase TPC
Abstract
The XENON100 dark matter experiment uses liquid xenon in a time projection chamber (TPC) to measure xenon nuclear recoils resulting from the scattering of dark matter weakly interacting massive particles (WIMPs). In this paper, we report the observation of single-electron charge signals which are not related to WIMP interactions. These signals, which show the excellent sensitivity of the detector to small charge signals, are explained as being due to the photoionization of impurities in the liquid xenon and of the metal components inside the TPC. They are used as a unique calibration source to characterize the detector. We explain how we can infer crucial parameters for the XENON100 experiment: the secondary-scintillation gain, the extraction yield from the liquid to the gas phase and the electron drift velocity.
Address
[Aprile, E.; Budnik, R.; Choi, B.; Contreras, H.; Giboni, K-L; Goetzke, L. W.; Lim, K. E.; Fernandez, A. J. Melgarejo; Messina, M.; Plante, G.; Rizzo, A.] Columbia Univ, Dept Phys, New York, NY 10027 USA, Email: jacob.lamblin@lpsc.in2p3.fr;
Corporate Author
Thesis
Publisher
Iop Publishing Ltd
Place of Publication
Editor
Language
English
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0954-3899
ISBN
Medium
Area
Expedition
Conference
Notes
WOS:000331865800012
Approved
no
Is ISI
yes
International Collaboration
yes
Call Number
IFIC @ pastor @
Serial
1959
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